<div style="padding:50px;">
    
<a id="give" href="#">领取优惠券</a>
<script type="text/javascript">
$(function(){
    $('#give').click(function(){
        $.post('/campaign/coupon', {'no':'CN100'}, function(data){
            if(data.isSuccess)
                alert('领券成功');
            else
                alert(data.message);
        }, 'json');        
    });

});
</script>
</div>